On Wednesday, the Denver coroner announced the victim was Estevan Ruiz, 39. He died of a stab wound to the neck.

Denver police offered few details about the case on Wednesday but said they were investigating the possibility that the two men knew each other. More than a dozen people were on the bus when the stabbing took place, and police said they had questioned many witnesses.

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The stabbing was not the first on an RTD bus.

Last May, Michael Walker fatally stabbed a man during a fight on an RTD bus in self defense.

Walker, a 53-year-old mechanic, was a regular on the route who began arguing with Aaron Bishop and Robert Rodgers after they ignored the bus driver's instructions to close windows they'd opened.

Not all kids who play baseball are uniformed with fancy script across their chests, traveling to $1,000 instructional camps and drilled how to properly hit the cut-off man. Some kids just play to play.